Imagine an installer who receives a company car for July, August and September. He drives 250 private kilometres in July, then none at all. The car sits outside his home for much of August. By September, everyone assumes the private-use question has faded away.
Payroll cannot make that assumption. The Belastingdienst Payroll Taxes Handbook requires private kilometres to be recalculated when an employee has a company car for only part of the calendar year. In this three-month example, 250 kilometres becomes an annualised 1,000 kilometres. That exceeds the 500-kilometre limit.
The taxable benefit applies for July, August and September. It does not stop after the month containing the private journeys, and it does not extend to the rest of the year. The mileage test follows annualised use. The payroll entry follows the period when the car was available.
The quiet months still count
This distinction is easy to miss because a business experiences the car month by month. July had private use. August did not. September did not. A reasonable person may expect three different payroll outcomes.
The tax calculation asks what those private kilometres represent over a full calendar year. For exactly three months of availability, 125 private kilometres annualise to 500. Once the employee drives more than 125 private kilometres, the exception no longer applies for that three-month period.
A complete trip record remains valuable. It establishes what happened and gives payroll a sound basis for the calculation. Sometimes that record confirms that the threshold has been crossed. That is still a record doing its job.
The rule warns against monthly intuition. Payroll often connects events across periods that managers experience separately. A car can remain still during August and still belong in August's taxable wage because the annual test has already been exceeded.
The handover is the real weakness
For a small employer, the difficult part is rarely the multiplication. The real challenge is getting the right facts to the right person before payroll closes.
A founder may lend an available car to a project manager for a few months. The office manager holds the lease details. The employee records the journeys. An external payroll administrator hears about the arrangement only when someone forwards the mileage record in September.
By then, July and August may already have been reported. Depending on the filing position and payroll system, earlier periods may need correction. The business consequence is straightforward: a temporary vehicle arrangement can reopen completed wage administration.
The important dates are not only the lease dates. Payroll needs to know when the employee actually received and returned the car. If availability begins or ends during a month, the benefit is calculated by calendar days.
Shared cars require the same discipline. Access to keys or a vehicle app can matter, as can the period when a particular employee could actually use the car. Calling a vehicle a pool car helps colleagues describe it. It does not replace a record of who had access, for how long, and for which journeys.
A tax entry with a human consequence
Private use of an employer-provided car counts as employment income in kind. It affects wage tax, national-insurance contributions, employee-insurance premiums and the relevant health-insurance contribution treatment. The ordinary company-car benefit also cannot simply be placed in the work-related costs scheme as discretionary final-levy wage.
The amount depends on the vehicle and the applicable rules. Catalogue value, first-admission date, emissions category and any employee contribution can all matter. Older vehicles may require a different valuation basis, including market value under the youngtimer rules.
What can be predicted is the conversation. The employee may see no private journeys in August and question a lower net salary for that month. The employer may feel that payroll has changed the arrangement after the event. Payroll, meanwhile, is applying a rule triggered by facts it received late.
That tension is best addressed before the keys change hands. A short explanation of the annualised test gives the employee a fair view of the possible cost. It also prevents the payroll administrator from becoming the bearer of surprising news months later.
For an owner-managed company, several late discoveries can create a cash issue. One correction may be manageable. Several temporary cars missing from earlier wage periods can produce an unexpected payroll payment alongside the ordinary monthly bills.
Small controls before large corrections
A useful vehicle record connects a few practical facts: availability dates, the person with access, vehicle details needed for the calculation, mileage evidence, any declaration concerning private use, and the instruction sent to payroll. Its value lies in the connection between those facts.
It also helps to compare actual handover dates with payroll dates before the next wage run closes. Where the company relies on the low-private-use position, annualised kilometres deserve attention during the assignment, not only when the car returns.
For a three-month arrangement, every private kilometre carries four times its visible weight in the annual test. That makes a small amount of private driving more significant than it first appears.
Back at the installer's home, the quiet car in August still looks harmless. That is precisely why this rule catches people. The tax consequence does not follow how busy the car appears in one month. It follows the full period when the employee had it available.
The practical lesson is modest. Temporary cars need a formal handover between the person issuing the keys and the person maintaining the wage ledger. When that handover works, the calculation remains routine. When it fails, three months of convenient transport can return later as three months of corrections, questions and avoidable friction.
Need help checking a temporary company car, its records or payroll treatment? Our team can review the facts with you
The data, sourcing, and analysis behind this article were conducted by Linda Pavan. AI was not used to identify sources, build the factual basis, or produce the analytical judgment contained here. AI was used only as a drafting aid. The final English text was personally reviewed, edited, and approved by Linda Pavan before publication.
